Victorian Owner-Builder Insurance: $16,000 and the 6-Year-6-Month Sale Rule

Figures checked 1 October 2026 against Consumer Affairs Victoria’s owner-builder guidance.

A builder, contractor or tradesperson must provide domestic building insurance for domestic building work over $16,000, while an owner-builder must take out their own cover for their own work over $16,000 to protect a property buyer. If an owner-builder sells within six years and six months of completing the building work, they must provide a defects inspection report no more than six months old from a registered building practitioner, covering all work regardless of value.

When does a person count as an owner-builder in Victoria?

Consumer Affairs Victoria describes an owner-builder as someone who intends to:

• Use their own skills to build, extend or renovate their home.
• Manage subcontractors to carry out the work.
• Build, extend or renovate a home on their property while being a registered builder.

The role therefore includes both hands-on work and managing the people who undertake it. Most laws applying to registered builders also apply to owner-builders. Their rights and responsibilities are governed by the Domestic Building Contracts Act 1995 and the Building Act 1993.

What responsibilities come with doing or managing the work?

An owner-builder takes on many of the responsibilities of a registered builder, along with the associated financial risks. These responsibilities include:

• Doing all or part of the work personally, except work that must be performed by licensed tradespeople.
• Contracting out work and checking that tradespeople are registered and licensed where required.
• Arranging insurance.
• Maintaining the occupational health and safety of workers.
• Obtaining permits and organising legally required inspections.
• Ensuring the work complies with building regulations, standards and other laws.
• Managing the project’s contracts, finances and warranties.

A building consultant can provide independent advice during construction and check the quality of both the owner-builder’s work and the work of other people engaged on the project.

Which contracts and permits need to be in place?

Consumer Affairs Victoria sets out several contract and permit requirements:

• Even if you have signed as the owner-builder on the building permit, you and a builder, contractor or tradesperson must have a written contract for domestic building work more than $10,000.
• Before you sign a major domestic building contract, the builder must give you a copy of the Domestic Building Consumer Guide.
• Consumer Affairs Victoria recommends using a major domestic building contract and a registered builder for work over $10,000. It also recommends using a registered builder to reblock, restump, demolish or remove a home, regardless of the work’s value.
• You must obtain relevant planning permits from your local council and be named as the owner-builder on permits.
• You must engage a building surveyor to obtain building permits, including an occupancy permit or certificate of final inspection when the work is completed.
• You must obtain a certificate of consent from the Building and Plumbing Commission before carrying out domestic building works over $16,000.
• Only one owner-builder permit may be obtained for a single home and associated work on that property once every five years.

Consumer Affairs Victoria warns against signing a building permit as the owner-builder merely because a builder or tradesperson asks you to do so while they will perform the work. The provider may be unregistered or may be trying to avoid legal responsibilities, leaving you with greater financial exposure than expected. Seek legal advice before agreeing to become the owner-builder in those circumstances.

Does a practitioner doing some work remove the insurance requirement?

No. The practitioner’s insurance and the owner-builder’s insurance serve different purposes.

Situation	Insurance responsibility for work over $16,000
A builder, contractor or tradesperson performs owner-builder work	The provider must give the owner-builder domestic building insurance, protecting the owner-builder if that provider dies, disappears or becomes insolvent.
The owner-builder performs their own work	The owner-builder must take out domestic building insurance to protect a future property buyer.
A registered building practitioner performs work under a major domestic building contract	That work should be covered by the practitioner’s insurance, but the owner-builder still needs their own insurance for their own work.

Consumer Affairs Victoria recommends ensuring that any builder engaged for work over $16,000 has appropriate domestic building insurance. Before obtaining insurance, ask the provider which documents it requires. The owner-builder will need the defects report and domestic building insurance certificates supplied by builders or tradespeople working on the project.

What must happen when selling within six years and six months?

If the property is sold within six years and six months after the building work is completed, the owner-builder must provide a defects inspection report that:

• Is no more than six months old.
• Comes from a registered building practitioner.
• Covers all building work regardless of its value.

The report’s scope includes extensions, renovations, garages and verandas—not only work above the insurance threshold. This is why the insurance requirement and the sale-report requirement must be considered separately.

Domestic building insurance does not cover defects or incomplete work identified in the defects inspection report. The owner-builder should therefore deal with those matters separately rather than assuming they are included in the policy.

What does domestic building insurance cover?

Under Consumer Affairs Victoria’s guidance, domestic building insurance provides cover for costs up to $300,000 toward fixing:

• Structural defects for six years.
• Non-structural defects for two years.

The property is no longer covered by domestic building insurance after six years. That does not align perfectly with the defects-report requirement, which can apply when the property is sold within six years and six months of completion.

Cover becomes effective once the contract of sale is signed. A buyer can use the insurance only if the owner-builder has died, become insolvent or disappeared. Domestic building insurance does not remove warranties that continue to apply.

This is general information, not financial or legal advice. Check Consumer Affairs Victoria’s current owner-builder guidance and the relevant policy’s Product Disclosure Statement before acting.

Sources

• Owner builders — Consumer Affairs Victoria

FAQ

Does a tradesperson doing some work remove my owner-builder insurance obligation?

No. For work over $16,000, the tradesperson or other provider must give the owner-builder domestic building insurance, while the owner-builder must also arrange insurance for their own work to protect a future buyer.

Is the defects inspection report only required for work over $16,000?

No. When the sale occurs within six years and six months of completion, the report must cover all work regardless of value, including extensions, renovations, garages and verandas.

How recent must the defects inspection report be?

It must be no more than six months old and must come from a registered building practitioner.

Will domestic building insurance cover every problem shown in the report?

No. Defects and incomplete work identified in the defects inspection report are not covered by domestic building insurance. Any applicable warranties or other contractual rights may still need to be considered.